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Tetrahydrofuran (THF), or oxolane, is an organic compound with the formula (CH 2) 4 O. The compound is classified as heterocyclic compound, specifically a cyclic ether. It is a colorless, water-miscible organic liquid with low viscosity. It is mainly used as a precursor to polymers. [8] Being polar and having a wide liquid range, THF is a ...
This page provides supplementary chemical data on tetrahydrofuran. Material Safety Data Sheet ... 50: 60: 66 log 10 Tetrahydrofuran vapor pressure. Uses formula: ...
It is dissimilar vs ethers such as tetrahydrofuran. Like enol ethers, 2,5-disubstituted furans are susceptible to hydrolysis to reversibly give 1,4-diketones. Furan serves as a diene in Diels–Alder reactions with electron-deficient dienophiles such as ethyl ( E )-3-nitroacrylate. [ 15 ]
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In terms of its structure, it consists of a tetrahydrofuran ring substituted in the 2-position with a hydroxymethyl group. It is a colorless liquid that is used as a specialty solvent and synthetic intermediate, e.g. to 3,4-dihydropyran. It is prepared by hydrogenation of furfural. [1] It is a precursor to 1,5-pentanediol. [2]
The synthetic version of this natural flavorant and odorant is used in a variety of food and beverage applications, including coffee, nuts, cocoa, brandy, meat sauces and as a general food flavorant at a typical dosage (about 5-20 ppm), similar to the natural concentration (30 ppm) of coffee furanone in roasted coffee.
It is produced by polymerization of tetrahydrofuran as well as 1,4-butanediol. The product is commercially available as polymers of low average molecular weights , between 250 and 3000 daltons . In this form it is a white waxy solid that melts between 20 and 30 °C.
For example, tetrahydrofuran-3-one (3-ketotetrahydrofuran) [12] and 3-aminotetrahydrofuran [13] have been synthesized from 3-hydroxytetrahydrofuran and used in pharmaceutical syntheses. Additionally, additive amounts (0.05-0.15 weight %) of the nitrate ester manufactured by sulfuric acid - nitric acid nitration of 3-hydoxytetrahydrofuran have ...